I never made such an argument for/against RT, so can’t comment on that.
I’m simply showing reviews of older cards to show that enabling 4*AA did not lead to an instant -50% performance penalty. You only got crazy drops like that when the GPU was VRAM or bandwidth limited, or with R600’s obvious architectural problems.
I don't get this. If you ignore the bottlenecks that can cause performance issues, like memory bandwidth, then performance isn't actually that bad?